diff --git a/elevator-pipeline/poll_outage/requirements.txt b/elevator-pipeline/poll_outage/requirements.txt
index 07eb1bb..315df05 100644
--- a/elevator-pipeline/poll_outage/requirements.txt
+++ b/elevator-pipeline/poll_outage/requirements.txt
@@ -4,7 +4,7 @@ certifi==2017.7.27.1
 chardet==3.0.4
 dataset==1.0.2
 idna==2.6
-lxml==4.6.5
+lxml==4.9.1
 Mako==1.0.7
 MarkupSafe==1.0
 normality==0.4.4
diff --git a/elevator-pipeline/requirements.txt b/elevator-pipeline/requirements.txt
index 0d677c9..d571a40 100644
--- a/elevator-pipeline/requirements.txt
+++ b/elevator-pipeline/requirements.txt
@@ -28,7 +28,7 @@ jupyter==1.0.0
 jupyter-client==5.0.0
 jupyter-console==5.1.0
 jupyter-core==4.3.0
-lxml==4.6.5
+lxml==4.9.1
 MarkupSafe==1.0
 memento-client==0.5.3
 mistune==0.8.1